- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F16K - Valvestapscocksactuating-floatsdevices for venting or aerating
- F16K 21/12 - Self-closing valves, i.e. closing automatically after operation in which the closing movement, either retarded or not, starts immediately after opening with hydraulically-operated opening meansSelf-closing valves, i.e. closing automatically after operation in which the closing movement, either retarded or not, starts immediately after opening with arrangements for pressure relief before opening
Patent holdings for IPC class F16K 21/12
Total number of patents in this class: 26
10-year publication summary
|
2
|
2
|
4
|
4
|
3
|
0
|
1
|
1
|
0
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| AS America, Inc. | 1031 |
5 |
| Kohler Mira Limited | 302 |
2 |
| Ausco, Inc. | 19 |
1 |
| B/E Aerospace, Inc. | 1702 |
1 |
| Bray International, Inc. | 144 |
1 |
| Fisher Controls International LLC | 1494 |
1 |
| Freevalve AB | 47 |
1 |
| Grohe AG | 1055 |
1 |
| LIM Technology, LLC | 1 |
1 |
| Masco Canada Limited | 121 |
1 |
| Parker-Hannifin Corporation | 1020 |
1 |
| PURITY (Xiamen) Sanitary Ware Co., Ltd. | 63 |
1 |
| Sandvik Mining and Construction Oy | 863 |
1 |
| Sloan Valve Company | 277 |
1 |
| Zurn Industries, LLC | 71 |
1 |
| Kryptos Biotechnologies, Inc. | 19 |
1 |
| Shukos Components Limited | 1 |
1 |
| Intaco Ltd | 2 |
1 |
| Kohler Mira Limited | 10 |
1 |
| Bio Gen Laboratorio S.A.S. | 1 |
1 |
| Other owners | 1 |